fix(idempotency): ensure in_progress_expiration field is set on Lambda timeout. (aws-powertools#4773)

* fix(idempotency): fix timeout bug from aws-powertools#4759

* Adding comment

* Adding comment

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Co-authored-by: Leandro Damascena <[email protected]>

Author: sthulb

aws_lambda_powertools/utilities/idempotency/persistence/base.py

@@ -301,7 +301,10 @@ def save_inprogress(self, data: Dict[str, Any], remaining_time_in_millis: Option
             payload_hash=self._get_hashed_payload(data=data),
         )
 
-        if remaining_time_in_millis:
+        # When Lambda kills the container after timeout, the remaining_time_in_millis is 0, which is considered False.
+        # Therefore, we need to check if remaining_time_in_millis is not None (>=0) to handle this case.
+        # See: https://github.com/aws-powertools/powertools-lambda-python/issues/4759
+        if remaining_time_in_millis is not None:
             now = datetime.datetime.now()
             period = datetime.timedelta(milliseconds=remaining_time_in_millis)
             timestamp = (now + period).timestamp()